diff --git a/src/segment/block_index/writer.rs b/src/segment/block_index/writer.rs
index b2600a91..cd892b5e 100644
--- a/src/segment/block_index/writer.rs
+++ b/src/segment/block_index/writer.rs
@@ -17,7 +17,6 @@ fn concat_files<P: AsRef<Path>>(src_path: P, dest_path: P) -> crate::Result<()>
     let mut reader = BufReader::new(reader);
 
     let writer = OpenOptions::new()
-        
         .create(true)
         .append(true)
         .open(dest_path)?;